HP — Using the Service Tools from the Touchscreen

Test 12: Manual Scaling Adjustment This test allows you to adjust the Y-Axis Scaling. The scaling (dpi) in the mechanical scan direction (Y-Axis) depends on the speed of the stepper motor relative to the scanline Exposure Time. The default motor speed can be changed ± 1%, either from Test 12 or by using the ‘ Scanner Setup/Correction factor … ’ option of SW copying. The correction factor is stored in the Flash Memory on the Scanner Controller Board. Test 20: Streak test The purpose of this test is to detect and locate the possible cause (dust, dirt, scratches,..) of vertical lines running from top to bottom of the scanned image.

This test is very useful if there are image quality issues such as streaks throughout the scan (Scan direction). It can be determined if the streaks are dust that are: 1. Present in the scanner (Dark streak that goes below the average line). 2. Present during Scanner Maintenance (white streak that goes above the average line). Insert SM calibration sheet when asked. Test 42: Backup Calibration and statistics Use this option to backup the calibrations and the scanner accounting values onto a USB drive. Test 43: Restore Calibration and Statistics Use this option to restore the calibrations and accounting values previously backed up onto a USB drive. Test 45:

Operator Panel Key Test ENWW Using the Service Tools from the Touchscreen 5